JPH07236800A - Automatic-water-supply-type cordless steam iron - Google Patents

Abstract

PURPOSE:To provide an automatic-water-supply-type cordless steam iron capable of automatically changing the amount of steam to be generated to an amount suitable for a set temperature, in compliance with the switching of the set temperature of the base. CONSTITUTION:When the main body 1 of an iron is put on a stand 26 and a conductive state is produced, a secondary battery 45 is charged by the power supplied from outside, a water pumping device 12 is operated to supply water, and the water in a main tank 32 is supplied to an auxiliary tank 6. When the main body of the iron is separated from the stand and an uncharged state is produced, the water pumping device 12 is operated to discharge water by the power supplied from the secondary battery 45, the water in the auxiliary tank is sent to a branch conduit 13, a second circulation control valve 18 is opened to send the water in the auxiliary tank to a vaporizing chamber 7 through the branch conduit, and steam is generated. Then, a controller 22 controls the on-off of the power to a heater 2, so that the temperature of a base 3 measured by a temperature sensor keeps the fixed temperature of the base set by a temperature switch 24.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic water supply type cordless steam iron used for press finishing of clothes and the like.

[0002]

2. Description of the Related Art In recent years, cordless steam irons of automatic water supply type have been provided. In this automatic water supply type cordless steam iron, a main tank having a large capacity is provided on a mounting table on which an iron body is mounted, and a sub tank having a small capacity and a water supply pump are provided on the iron body.

The mounting table is provided with a power supply terminal and a water supply port, and the iron body is provided with a power supply terminal capable of contacting the power supply terminal and a water supply port connectable to the water supply port. When placed, the power supply terminal comes into contact with the power supply terminal to be energized and the water supply port is connected to the water supply port.

In this state, the water supply pump in the mounting table is driven, the water in the main tank is pumped from the water supply port to the water supply port by this water supply pump, and this water is sent from the water supply port into the sub tank in the iron body. . Further, the heater incorporated in the base of the iron body is energized, and the heater heats the base.

Therefore, when the iron body is separated from the mounting table and the steam button is operated, the water in the sub-tank is supplied to the vaporization chamber of the base by an appropriate amount, and the water is vaporized by the heat of the base to become steam. The steam is sequentially ejected from the lower surface of the base, and in this state, the lower surface of the base is pressed against the cloth to perform ironing work.

In such an automatic water supply type cordless steam iron, water can be replenished in the sub-tank inside the iron body each time the iron body is placed on the placing table, so that the sub-tank can have a small capacity. The entire structure of the iron body becomes compact,
It has the advantage of being convenient to handle.

On the other hand, some conventional steam irons with a cord incorporate an electromagnetic electric pump as a water supply means for supplying the water in the water tank in the iron body to the vaporizing chamber of the base.

By using an electric pump as the water supply means, the amount of water supplied to the vaporization chamber can be varied. For this reason, the amount of water supplied to the vaporization chamber is increased during ironing work of fabrics that are ironed at high temperatures such as hemp, increasing steam generation, and ironing of fabrics that are ironed at low temperatures such as synthetic fibers. It was possible to reduce the amount of steam generated during work by reducing the amount of steam generated.

[0009]

However, in the conventional automatic water-filling type cordless steam iron, power supply cannot be performed after the iron body is separated from the mounting table. Therefore, an electric pump is used as the water supply means. It could not be used. Therefore, the amount of steam generated was always constant even if the base set temperature was changed due to the difference in fabric.

Therefore, the present invention intends to provide an automatic water-filling type cordless steam iron which can automatically change the steam generation amount to an amount suitable for the base set temperature in accordance with the switching of the base set temperature and further improve the usability. It is a thing.

[0011]

The present invention comprises an iron body and a mounting table on which the iron body is placed. The iron body is formed on a base heated by heating means and a part of the base. The vaporization chamber, the sub-tank that stores water to be supplied to this vaporization chamber, the water supply port that communicates with this sub-tank via a water supply conduit, the electric water supply / drainage device that is interposed in the middle of the water supply conduit, and the power supply The mounting table is provided with a power supply terminal for receiving, and the mounting table has a main tank having a larger capacity than the sub tank, a water supply port connected to the water supply port according to the placement of the iron main body, and a water supply conduit for communicating the water supply port with the main tank. In the automatic water-supply-type cordless steam iron, which includes a power supply terminal that comes into contact with a power supply terminal and becomes an energized state according to the placement of the iron body, the iron body is A branch pipe with one end connected to the water supply port side of the water supply / drainage device side of the water conduit and the other end connected to the vaporization chamber; and a water supply port provided on the water supply port side of the branch conduit connection position of the water supply pipe. A first flow control valve that opens the valve port by connection with the water supply port; and a second flow control valve that intervenes in the middle of the branch conduit and opens and closes the valve port due to pressure fluctuations.
The secondary battery that supplies power to the water supply and drainage device, the temperature setting means that switches and sets the set temperature of the base, and the amount of power that is supplied from the secondary battery to the water supply and drainage device according to the temperature set by this temperature setting means. With the control means for controlling, the iron body is placed on the mounting table in the energized state, the secondary battery is charged by the power supplied to the power supply terminal through the power supply terminal, and the iron body is de-energized from the mounting table. In this state, the water supply / drainage device is drained by the power supply from the secondary battery controlled by the control means to send the water in the sub-tank to the branch conduit, and the second flow control valve is opened by the water pressure. This water is sent to the vaporization chamber through a branch conduit.

[0012]

According to the present invention having such a structure, when the iron body is used, the iron body is first placed on the placing table. Then, along with this placement, the water supply port on the iron body side is connected to the water supply port on the mounting table side, the first flow control valve is opened, and the water supply conduit communicates with the water supply conduit. Also,
The power supply terminal on the iron body side comes into contact with the power supply terminal on the mounting table to be energized.

When the water supply / drainage device is operated for water supply due to this energization, the water in the main tank is sucked through the water supply conduit and the water supply conduit and sent into the sub tank. Further, the heating means is energized to heat the base and the secondary battery in the iron body is charged.

Therefore, the iron body is separated from the mounting table to operate the steam button. Then, the water supply / drainage device performs drainage operation by the power supply from the secondary battery, the water in the sub-tank is sent to the branch conduit through the water supply conduit, and the water pressure at this time opens the second flow control valve to open this. As a result, the water in the sub tank is sent into the vaporization chamber through the branch conduit. Then, this water is vaporized by the heat of the base to become steam, and this steam is sequentially ejected from the lower surface of the base. In this state, ironing work is performed by pressing the lower surface of the base against the cloth.

Here, when the base set temperature is set low by the temperature setting means, the amount of electric power supplied from the secondary battery to the water supply / drainage device is controlled to be small. As a result, the amount of water supplied to the vaporization chamber is reduced and the amount of steam generated is reduced.

On the other hand, when the base set temperature is set high, the amount of electric power supplied from the secondary battery to the water supply / drainage device is largely controlled. As a result, the amount of water supplied to the vaporization chamber is increased and the amount of steam generated is increased.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view of an essential part of the entire structure of such an automatic water-feeding cordless steam iron.
Is the iron body. This iron body 1 is a heater 2
The base 3 is made of die-cast material, and the upper surface of the base 3 is covered with a heat shield cover 4.
A handle 5 is attached on the top of the above, and a sub tank 6 having a small capacity is provided inside the handle 5.

A vaporization chamber 7 is formed on the upper surface of the base 3, and the inside of the vaporization chamber 7 communicates with the lower surface side of the base through a steam ejection hole 8 formed on the lower surface of the base 3.

A water supply pipe 9 is provided on the rear end face of the handle 5, and an end face on one end side of the water supply pipe 9 is opened as a water supply port 10. A water supply conduit 11 that connects the water supply port 10 to the inside of the sub tank 6 is provided between the water supply pipe 9 and the sub tank 6, and a water supply / drainage pump 12 as an electric water supply / drainage device is provided in the middle of the water supply conduit 11. It is provided.

The water supply / drainage pump 12 is of a reversible operation type and has an open water channel structure. That is, for example, a gear type water supply mechanism (not shown) is provided inside the water supply / drainage pump 12, Water is sent from the water supply port 10 side to the sub tank 6 side by the forward rotation operation of this water supply mechanism, and water is sent from the sub tank 6 side to the water supply port 10 side by the reverse rotation operation of the water supply mechanism, and the water channel is opened when the operation is stopped. It has a structure that allows water to flow freely.

A branch conduit 13 is provided above the base 3 for communicating the sub tank 6 with the vaporization chamber 7. The branch conduit 13 has one end connected to the water supply port 10 side of the water supply / drainage pump 12 position of the water supply conduit 11 and the other end connected to a nozzle hole 14 formed on the upper surface of the vaporization chamber 7. There is. The nozzle hole 14 is opened and closed by a needle valve 15.

A first ball valve 16 as a first flow control valve is arranged facing the water supply port 10 on the water supply port 10 side of the connection position of the water supply conduit 11 with the branch conduit 13. The first ball valve 16 is elastically biased by the spring 17 so as to normally close the water supply port 10.

A second ball valve 18 serving as a second flow control valve is disposed in the middle of the branch conduit 13, and the second ball valve 18 causes one end of the branch conduit 13 by a spring 19. It is elastically biased to be normally closed.

A vent hole 20 is formed at the upper end of the sub tank 6. A full water detection sensor 21 that detects full water in the sub tank 6 is also provided.
A control unit 22 that controls the water supply / drainage pump 12 and the like is provided inside the handle 5, and a secondary battery 45, such as a NiCd battery, is provided at the rear of the handle 5 as a power source for driving the water supply / drainage pump 12. .

An operating portion 23 is provided on the upper surface of the handle 5, and a steam / dry changeover switch 24 and a temperature setting switch 25 are disposed on the operating portion 23.
The temperature setting switch 24 constitutes a temperature setting means for switching and setting the set temperature of the base 3 in accordance with the types of cloth “linen” “cotton” “hair” “chemical 1” “chemical 2”, and the steam / dry switch 25 Constitutes an operation mode setting means for switching and setting the steam operation mode and the dry operation mode.

In FIG. 1, reference numeral 26 is an iron body 1.
On the upper surface of the mounting table 26, a mounting portion 27 and a tank accommodating portion 28 are formed for mounting the container. A standing wall 29 is formed between the mounting portion 27 and the tank storage portion 28, and guide rollers 30, 31 are provided on the upper surface of the mounting portion 27.
When the base 3 of the iron body 1 is placed on the guide rollers 30 and 31 and the iron body 1 is released, the iron body 1 slides toward the arrangement side of the standing wall 29 and the rear end surface of the iron body 1 is provided. Collides with the standing wall 29,
The iron 27 is placed on the mounting portion 27 in an inclined state in which the iron body 1 is directed obliquely upward.
It is supposed to be held on top of.

A main tank 32 having a capacity larger than that of the sub-tank 6 is housed in the tank housing portion 28 so that the main tank 32 can be inserted and removed freely. A normally closed drain valve 33 is provided at the bottom of the main tank 32, and a normally closed water receiving valve 34 is provided at the inner bottom of the tank storage portion 28 so as to face the drain valve 33. The drain valve 33 is connected to the water receiving valve 34 according to the storage of the main tank 32 with respect to
With this connection, the drain valve 33 and the water receiving valve 34 are opened, and the water in the main tank 32 flows into the water receiving valve 34 through the drain valve 33.

A water inlet 35 is formed on the upper surface of the main tank 32, and a ventilation pipe 36 is provided. A cap 37 is detachably attached to the water injection port 35.

A water supply pipe 40 is provided on the front surface of the standing wall 29, and the end face of the water supply pipe 40 on one end side is the water supply port 4.
It is open as 1. Water pipe 40 and the water receiving valve 33
A water supply conduit 42 that connects the water supply port 41 to the inside of the water receiving valve 33 is provided between and, and a flow control valve 44 that opens and closes the valve port due to pressure fluctuation is provided in the middle of the water supply conduit 42. .

A push pin 43 is provided inside the water supply pipe 40 so as to face the water supply port 41. Then, when the iron body 1 is placed on the placing portion 27 of the placing table 26 and the rear end surface of the iron body 1 collides with the front surface of the standing wall 29, the water supply port of the iron body 1 according to this operation. 10 is connected to the water supply port 41, and the push pin 43
Goes into the water supply port 10 and moves the ball valve 16 into the spring 1
The water supply port 10 is opened by pushing in against the elastic force of 7, and the water supply port 10 and the water supply port 41 communicate with each other.

A power supply terminal 51 (shown in FIG. 3) is provided on the standing wall 29 of the mounting table 26, and a power supply terminal 52 (shown in FIG. 3) is provided on the rear end surface of the handle 5 of the iron body 1. When the iron body 1 is placed on the mounting table 26, the power supply terminal 52 comes into contact with the power source terminal 51, and the heater 2 of the iron body 1 is electrically connected to an external power source by this contact. As a result, the heater 2 generates heat and the base 3 is heated.

FIG. 3 is a block diagram showing a circuit configuration of a main part of the iron body 1. The control unit 22 controls the power supply terminal 52.
When the base set temperature is set by the temperature setting switch 24 in a state where the power supply terminal 51 of the mounting table 26 is in contact with the power supply terminal 51 and the power is supplied, the power supply to the heater 2 is started. At this time, the energization on / off of the heater 2 is controlled so that the temperature of the base 3 measured by the temperature sensor 53 maintains the base set temperature.

In this energized state, the water supply operation and the water discharge operation of the water supply / drainage pump 12 are controlled. When the full water detection sensor 21 detects full water in the sub tank 6 during the water supply operation, the water supply operation is stopped.

Further, in this energized state, steam
When the steam operation mode is selected by the dry changeover switch 25, the secondary battery 45 is charged by the power supplied to the power supply terminal 52 via the power supply terminal 51.

On the other hand, when the power supply terminal 52 is not in contact with the power supply terminal 51 and is in the non-energized state, the power from the secondary battery 45 is supplied only when the steam operation mode is selected by the steam / dry changeover switch 25. Is supplied to the water supply / drainage pump 12 to drive the water supply / drainage pump 12. At this time, when the base set temperature is set high by the temperature setting switch 24, the power supply amount is controlled to be large, and when it is set low, the power supply amount is controlled to be small.

When the iron main body 1 is placed on the placing table 26 and the water supply / drainage pump 12 is rotated in the forward direction to perform the water supply operation, as shown in FIG. Since the ball valve 16 is pushed by the push pin 43 to open the water supply port 10 and the water supply conduit 42 on the mounting table 26 side communicates with the water supply conduit 11 in the iron body 1, the main tank 32 The water of this is the water supply conduit 4
2 and the water supply conduit 11 to be sucked into the water supply / drainage pump 12 and further supplied into the sub tank 6. At this time, since the second ball valve 18 receives almost no water pressure,
The urging force of the spring 19 closes one end of the branch conduit 13 so that water does not flow into the vaporization chamber 7.

Further, when the iron body 1 is placed on the placing table 26 and the drainage operation is performed by reversing the operation of the water supply / drainage pump 12, as shown in FIG. Since the ball valve 16 is pushed by the push pin 43 to open the water supply port 10 and the water supply conduit 42 and the water supply conduit 11 communicate with each other, the water sucked from the sub tank 6 to the water supply / drainage pump 12 is supplied to this water supply conduit. The water is discharged to the main tank 32 side through the conduit 11 and the water supply conduit 42. At this time as well, since the second ball valve 18 receives almost no water pressure, one end of the branch conduit 13 is closed by the urging force of the spring 19 and water does not flow into the vaporization chamber 7.

On the other hand, when the iron main body 1 is separated from the mounting table 26 and the drainage operation is performed by rotating the water supply / drainage pump 12 in the reverse direction, as shown in FIG. Since the ball valve 16 closes the water supply port 10 by the urging force of the spring 17, the water sucked from the sub tank 6 to the water supply / drainage pump 12 is sent from the water supply conduit 11 to the branch conduit 13. The water pressure at this time causes the second ball valve 18 to open the valve opening by urging the urging force of the spring 19, and water is supplied to the vaporization chamber 7 through the branch conduit 13 and the nozzle hole 14.

Next, the operation of the present embodiment configured as described above will be described based on the control sequence shown in FIG. When using the iron body 1, first, the iron body 1 is placed on the placing portion 27 of the placing table 26 as shown in FIG. With this mounting, the water supply port 10 of the iron body 1 communicates with the water supply port 41 of the mounting table 26. Further, the power supply terminal 52 of the iron body 1 comes into contact with the power supply terminal 51 of the mounting table 26 to be energized.

In this state, when the steam operation mode is selected by the steam / dry changeover switch 9 at the time point t0 and the cloth "Hemp" having a high base set temperature is selected by the temperature setting switch 8, the heater 2 is energized. And the water supply operation of the water supply / drainage pump 12 is started. In addition, charging of the secondary battery 45 is also started.

By the water supply operation of the water supply / drainage pump 12, FIG.
The water in the main tank 32 is supplied into the sub tank 6 by the action shown in (a). When the full water detection sensor 21 detects full water in the sub tank 6 at time t1, the water supply operation of the water supply / drainage pump 12 is stopped.

When the temperature measured by the temperature sensor 53 of the base 3 reaches the temperature set by the temperature setting switch 24 in the vicinity of the time t2, the control unit 22 is notified by an alarm or the like (not shown) to enable the ironing work. At the same time, energization OFF / ON to the heater 2 is repeated so as to maintain the temperature of the base 3 at the set temperature.

At the time t3, the iron body 1 is placed on the mounting table 26.
When the ironing work is started apart from the above, since the steam operation mode is selected, power is supplied from the secondary battery 45 to the water supply / drainage pump 12, and the water supply / drainage pump 1 is supplied.
2 performs drainage operation.

As a result, the water in the sub-tank 6 is supplied to the vaporizing chamber 7 by the action shown in FIG. 2 (c), and this water is vaporized by the heat of the base 3 to become steam, and this steam is the steam ejection hole. Eject from 8 in sequence.

At this time, since the base setting temperature is set to a high temperature by the temperature setting switch 24, the secondary battery 4
The power supply amount from 5 is largely controlled. Therefore, the amount of water supplied to the inside of the vaporization chamber 7 by the water supply / drainage pump 12 is increasing, and the amount of steam generated is large.

At the time t4, the ironing work is finished,
When the iron body 1 is returned to the mounting portion 27 of the mounting table 26, the power supply from the secondary battery 45 to the water supply / drainage pump 12 is stopped and the drainage operation is stopped. Moreover, the power supply to the power supply terminal 52 via the power supply terminal 51 starts energization of the heater 2 and the water supply operation of the water supply / drainage pump 12. The charging of the secondary battery 45 is also started.

When the water supply / drainage pump 12 supplies water, the water in the main tank 32 is supplied into the sub-tank 6, and when the full water detection sensor 21 detects full water in the sub-tank 6 at time t5, the water supply / drainage pump 12 is supplied with water. The operation is stopped.

At time t6, when the temperature setting switch 24 is switched to the cloth "hair" whose base set temperature is low, the base 3
If the temperature is already higher than the temperature set by the temperature setting switch 24, the power supply to the heater 2 is stopped. The rechargeable battery 44 is continuously charged.

When the temperature of the base 3 falls to the set temperature near the time t7, an alarm or the like is issued to enable ironing work, and the heater 2 is repeatedly turned on / off to turn the base 3 on and off. Is maintained at the set temperature.

When the ironing work is started at time t8, since the steam operation mode is selected, power is supplied from the secondary battery 45 to the water supply / drainage pump 12, and the water supply / drainage pump 12 performs the water discharge operation.

As a result, the water in the sub-tank 6 is supplied to the vaporization chamber 7, and this water is vaporized by the heat of the base 3 to become steam, and this steam is sequentially ejected from the steam ejection holes 8.

At this time, since the base set temperature is set to a low temperature by the temperature setting switch 24, the secondary battery 4
The power supply amount from 5 is controlled to be small. Therefore, the amount of water supplied into the vaporization chamber 7 by the water supply / drainage pump 12 is reduced, and the amount of steam generated is small.

At time t9, the ironing work is completed,
When the iron body 1 is returned to the mounting portion 27 of the mounting table 26, the power supply from the secondary battery 45 to the water supply / drainage pump 12 is stopped and the drainage operation is stopped. Moreover, the power supply to the power supply terminal 52 via the power supply terminal 51 starts energization of the heater 2 and the water supply operation of the water supply / drainage pump 12. The charging of the secondary battery 45 is also started.

When the water supply / drainage pump 12 supplies water, the water in the main tank 32 is supplied into the sub-tank 6, and when the full water detection sensor 21 detects full water in the sub-tank 6 at time t10, the water supply / drainage pump 12 is supplied with water. The operation is stopped.

At time t11, the steam / dry changeover switch 25 is switched to the dry operation mode and the temperature setting switch 24 selects the cloth "linen", so that the charging of the secondary battery 45 is stopped. The power supply to the heater 2 is continued. Further, the drainage operation of the water supply / drainage pump 12 is performed. By this drainage operation, the water in the sub tank 6 is drained into the main tank 32 by the action shown in FIG.

When the set temperature is reached in the vicinity of time t13, an alarm or the like is issued to enable the ironing work. When the ironing work is started at the time point t14, since the dry operation mode is selected, the power supply from the secondary battery 45 to the water supply / drainage pump 12 is not performed,
The water supply / drainage pump 12 is not driven.

At the time point 15, the ironing work is completed,
When the iron body 1 is returned to the mounting portion 27 of the mounting table 26, energization of the heater 2 is started. When the steam / dry changeover switch 25 is switched to the steam operation mode at time t16, the water supply operation of the water supply / drainage pump 12 is started and the charging of the secondary battery 45 is also started. Energization of the heater 2 is continued.

When full water in the sub-tank 6 is detected at time t17, the water supply operation of the water supply / drainage pump 12 is stopped. When the base temperature reaches the set temperature in the vicinity of the time point t18, the power supply to the heater 2 is repeatedly turned on / off to maintain the base temperature at the set temperature.

At time t19, the iron body 1 is placed on the mounting table 2
When the ironing work is started by separating from 6, since the steam operation mode is selected, power is supplied from the secondary battery 45 to the water supply / drainage pump 12, and the water supply / drainage pump 12 performs the water discharge operation.

As a result, the water in the sub-tank 6 is supplied to the vaporization chamber 7, and the water is vaporized by the heat of the base 3 to become steam, and this steam is sequentially ejected from the steam ejection holes 8.

At this time, since the base set temperature is set to a high temperature by the temperature setting switch 24, the secondary battery 4
The power supply amount from 5 is largely controlled. Therefore, the amount of water supplied to the inside of the vaporization chamber 7 by the water supply / drainage pump 12 is increasing, and the amount of steam generated is large.

When the ironing work is completed at time t20 and the iron body 1 is returned to the mounting portion 27 of the mounting table 26, the power supply from the secondary battery 45 to the water supply / drainage pump 12 is stopped and the drainage operation is started. Stop. In addition, the heater 2 is driven by the power supplied to the power supply terminal 52 via the power supply terminal 51.
The power supply to the water supply / drainage pump 12 is started at the same time when the power supply to the power supply is started. The charging of the secondary battery 45 is also started.

When the water supply / drainage pump 12 supplies water, the water in the main tank 32 is supplied into the sub-tank 6, and when the full water detection sensor 21 detects that the sub-tank 6 is full, the water supply / drainage pump 12 supplies water. The operation is stopped.

When the temperature setting switch 24 is turned off at time t22, the drainage operation of the water supply / drainage pump 12 is performed. As a result, the water in the sub tank 6 is discharged to the main tank 32 side, and the discharge is completed at time t23.

As described above, the automatic water supply type cordless steam iron of this embodiment uses the electric water supply / drainage pump 12 as means for supplying the water in the water tank 6 to the vaporization chamber 7 in the iron body 1. A secondary battery 45 is mounted on the iron main body 1 as a power source for driving the battery 12, and during ironing work in the steam operation mode, the water supply / drainage pump 12 is drained by the power supply from the secondary battery 45 to drain the water in the water tank 6. It is supplied to the vaporization chamber 7.

When the base set temperature is set to a high temperature by the temperature setting switch 24, the amount of electric power supplied from the secondary battery 45 to the water supply / drainage pump 12 is largely controlled to control the vaporization chamber 7
The amount of water supplied to the vaporization chamber 7 is reduced by increasing the amount of water supplied to the vaporization chamber 7 when the temperature is set to a low temperature.

Therefore, as in the case of the steam iron with cord, when the base set temperature is set to a high temperature such as when ironing the "linen" cloth, a large amount of steam is generated and the When the temperature is set to a low temperature, such as when ironing a cloth, the amount of steam generated is small, so that it is possible to always perform stable steaming ironing work with a steam generation amount suitable for the set temperature.

Further, in the automatic water supply type cordless steam iron, when the temperature of the base 3 is lowered during the ironing work by the steam operation, the iron body 1 is placed on the mounting table 26.
The heater 2 is energized to supply electricity to the heater 2 and water is supplied to the sub-tank 6.
Since charging to 5 is also performed at the same time, it is possible to prevent the secondary battery 45 from being over-discharged. Further, since the charging of the secondary battery 45 is stopped by selecting the dry operation mode, it is possible to prevent the secondary battery 45 from being overcharged.

During the ironing work, the heater 2 cannot be energized, so that the temperature of the base 3 gradually decreases, but when the temperature becomes lower than the set temperature, the driving of the water supply / drainage pump 12 is stopped. As a result, the unvaporized water will not be ejected from the steam ejection holes 8.

Further, since water supply and drainage to the sub-tank 6 and water supply for steam to the vaporization chamber 7 are performed only by the water supply and drainage pump 12, it is necessary to provide a pump dedicated to supplying water for steam supply separately from the water supply and drainage pump 12. Therefore, the iron body 1 does not increase in size and cost.

In the above embodiment, as the heating means for heating the base 3, the heater 2 is cast into the base 3 and heated from the inside. However, the heating means is provided in the mounting portion 27 of the mounting table 26, and the iron main body is provided. The present invention can also be applied to an automatic water supply type cordless steam iron in which the base 3 is externally heated by the heating means when the 1 is placed on the placing table 26.

[0072]

As described in detail above, according to the present invention, the amount of steam generated can be automatically changed to an amount suitable for the base set temperature in accordance with the switching of the base set temperature, and the usability can be further improved. A cordless steam iron can be provided.

[Brief description of drawings]

FIG. 1 is a sectional view showing the overall configuration of an embodiment of the present invention.

FIG. 2 is a schematic diagram showing a valve open state during a water supply operation, a drainage operation, and a water supply operation of the embodiment.

FIG. 3 is a block diagram showing a circuit configuration of a main part of the iron body in the embodiment.

FIG. 4 is a control sequence diagram used for explaining the operation of the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Iron main body 2 ... Heater (heating means) 3 ... Base 6 ... Sub tank 7 ... Vaporization chamber 10 ... Water supply port 11 ... Water supply conduit 12 ... Water supply / drainage pump (water supply / drainage device) 13 ... Branch conduit 16 ... First ball valve (No. 1) 1 flow control valve) 18 ... second ball valve (second flow control valve) 22 ... control unit 24 ... temperature setting switch (temperature setting means) 25 ... steam / dry changeover switch 26 ... mounting table 27 ... mounting Part 32 ... Main pump 41 ... Water inlet 42 ... Water conduit 45 ... Secondary battery 51 ... Power supply terminal 52 ... Power supply terminal

Claims (1)

[Claims] 1. An iron main body and a mounting table for mounting the iron main body, wherein the iron main body is heated by a heating means, a vaporization chamber formed in a part of the base, A sub tank for storing water to be supplied to the vaporization chamber, a water supply port communicating with the sub tank via a water supply conduit, an electric water supply / drainage device interposed in the middle of the water supply conduit, and a power supply terminal for receiving power supply. , The mounting table, a main tank having a larger capacity than the sub-tank, a water supply port connected to the water supply port according to the placement of the iron body, and a water supply conduit for communicating the water supply port with the main tank. An automatic water-supply-type cordless steam iron comprising: a power supply terminal which is brought into an energized state by contacting the power supply terminal in accordance with the placement of the iron body; The iron main body has a branch conduit connecting one end to the water supply port side of the water supply conduit from the water supply / drainage device interposing position and the other end connected to the vaporization chamber, and a branch conduit connection position of the water supply conduit. A first valve provided on the water supply port side and opening a valve port by connecting the water supply port and the water supply port
Flow control valve, a second flow control valve that is provided in the middle of the branch conduit and opens and closes a valve opening due to pressure fluctuation, a secondary battery that supplies power to the water supply and drainage device, and a base of the base. The iron body is provided with a temperature setting means for switching and setting the set temperature and a control means for controlling the amount of electric power supplied from the secondary battery to the water supply / drainage device according to the temperature set by the temperature setting means. In the energized state placed on the mounting table, the secondary battery is charged by the power supply supplied to the power supply terminal through the power supply terminal, and in the non-energized state in which the iron body is separated from the mounting table by the control means. The water supply / drainage device is drained by the power supply from the secondary battery to be controlled, the water in the sub-tank is sent to the branch conduit, and the second flow control valve is opened by the water pressure. An automatic water supply type cordless steam iron, wherein water in the sub-tank is fed into the vaporization chamber through the branch conduit.